Sound Check

In-Depth Explanation

What is a Sound Check?

A Sound Check is the critical preparation period that occurs in a live music venue several hours before the doors open to the public. It is a technical rehearsal where the performing artists, the Front of House (FOH) engineer, and the monitor engineer work together to ensure that the audio system is properly tuned for the specific room and that the band can hear themselves clearly on stage.

A proper sound check is the difference between a professional, tight-sounding concert and a chaotic, feedback-filled disaster.

The Two Halves of a Sound Check

A sound check serves two distinct but equally important purposes: mixing for the audience, and mixing for the band.

1. The Front of House (FOH) Mix

This is what the audience hears. The FOH engineer (who stands at the mixing desk in the middle of the room) asks each musician to play their instrument individually.

• They start with the drum kit (kick, snare, hi-hat, toms), setting the gain levels, applying EQ, and adding Compression so the drums sound powerful through the main PA system.
• They move to the bass, guitars, and keyboards.
• Finally, they check the lead and backing vocals, ensuring they are loud, clear, and sitting on top of the instrumental mix without causing high-frequency feedback (that painful, high-pitched squeal).

2. The Monitor Mix

This is what the band hears. If a drummer is playing loudly, the lead singer physically cannot hear their own voice over the noise. To solve this, venues use stage monitors (wedge speakers aimed back at the band) or In-Ear Monitors (IEMs).

• During sound check, the singer will tell the monitor engineer: "I need more of my own vocal, less guitar, and a little bit of kick drum in my wedge."
• Every musician gets their own customized mix sent to their specific monitor, allowing them to play in time and sing in tune.

The Sound Check Process

A typical sound check follows a strict, professional etiquette:

1. Load-In and Line Check: The band loads their gear onto the stage. The audio crew runs cables from the instruments/microphones to the mixing desk. The crew does a "line check" (tapping the mics) to ensure signal is flowing.
2. Individual Checks: The engineer calls for each instrument one by one. Musicians must not noodle or play their instruments unless specifically asked to by the engineer.
3. Full Band Check: The band plays one or two full songs (usually one loud, energetic song and one quiet song).
4. Final Adjustments: The band stops, requests any final changes to their monitor mixes, and the FOH engineer fine-tunes the room mix.

Line Checks vs. Sound Checks for Opening Acts

If a tour features three bands, there is rarely enough time for all three bands to get a full 45-minute sound check.

Usually, the Headliner gets a full, extensive sound check. The main support act might get a brief 15-minute sound check. The local opening act often gets no sound check at all. Instead, they get a "Line Check and Go."

In a Line Check, the opening act sets up their gear 15 minutes before they are scheduled to play. The engineer simply checks that all the microphones are working and getting signal. There is no time to balance the EQ or perfect the monitors. The engineer will build the mix "on the fly" during the first song of the opening act's set. This is a rite of passage for all independent artists.